Indications are that this code most often occurs when local Microsoft Servers are having an issue... Although other indications state Localized to South Africa router protocols... I'm not sure which camp you fall into so I've linked a couple of items to try and help.

Across the world error 805a0193 on Windows 8 mobiles is happening and user is unable to update or download any applications from Microsoft this is done on purpose as no support provided anymore. Sorry guys that is when Microsoft holds total monopoly. Any fixes and advise provided wont work don't waste time in resetting phone nothing can be done your access to download barred by Microsoft. Legal action against Microsoft is required.